"And if they see a sign," meaning the polytheists, "they turn away and say, 'A continuous magic.'"
﴿وَإِن يرَوا آيَة﴾ يَعْنِي: الْمُشْركين ﴿يُعْرِضُوا وَيَقُولُوا سِحْرٌ مُسْتَمر﴾
